all eyes on denver, colorado, as governor and president obama faced off in their first presidential debate. our partners at fact check say there were many repeated claims which stretched the truth. let's start with president obama's take on romney's tax plan. >> this is where there's a difference because governor romney's central economic plan calls for a $5 trillion tax cut. >> when president obama says that governor romney is going to provide a $5 trillion tax cut, he's only telling half the story. governor romney proposes a 20% across-the-board income tax cut, and to abolish the estate taxes. >> reporter: governor romney still hasn't described in detail how he's going to accomplish his revenue-neutral plans without raising taxes on the middle class, without increasing the deficit. now to president obama's claim that he'd only raise taxes on upper income people to where they were under president clinton. >> i have said that for incomes over $250,000 a year, that we should go back to the rates that we had when bill clinton was president, when we created 23 million new jobs. >> what presid